Dynamic balance control device for T-shaped bridge rotation construction based on unbalanced moment

Abstract

This utility model discloses a dynamic balance control device for the rotation construction of T-shaped bridges based on unbalanced moments. It includes an upper spherical hinge and a lower hinge support. The top surface of the lower hinge support has a spherical groove, and the bottom surface of the upper spherical hinge is a spherical structure rotatably connected within the spherical groove. Through the coordinated action of a torque monitoring module, a split-type friction pair, a horizontal dynamic adjustment system, and a system control unit, real-time monitoring and adaptive compensation of unbalanced moments during the rotation process are achieved. This utility model achieves real-time monitoring and adaptive compensation of unbalanced moments during the rotation construction process through the coordinated action of the torque monitoring module, the split-type sector-shaped friction pair adjustment block, the horizontal dynamic adjustment system, and the control unit. The device integrates a real-time detection system, a movable counterweight, and a locking function, significantly improving the stability and safety of the rotation, and is suitable for the construction of large-span asymmetrical bridges.

Description

Technical Field

[0001] This utility model belongs to the field of bridge rotation construction technology, specifically relating to a dynamic balance control device for T-shaped bridge rotation construction based on unbalanced moment. Background Technology

[0002] Bridge rotation construction technology is a construction process that achieves the spatial positioning of a bridge by rotating it around an axis. Its core lies in completing the pouring or assembly of the overall structure at a position deviating from the design axis, and then adjusting its spatial posture using specific mechanical devices. This method effectively overcomes engineering challenges such as constraints from complex terrain and interference from existing facilities by breaking through the limitations of traditional linear construction, achieving significant economic benefits while shortening the construction period and reducing construction risks.

[0003] During the rotation construction of T-shaped bridges, due to the asymmetry of the bridge structure and differences in load distribution, large unbalanced moments are easily generated during the rotation process. This leads to uneven stress on the ball joint, accelerated wear of the friction pairs, and even the risk of overturning during rotation. Traditional ball joint designs mostly rely on external counterweights or support systems to balance the moment, which has the following problems: counterweight construction is inefficient and costly, and it is difficult to cope with the dynamic moment changes of highly asymmetrical structures; the friction moment of existing ball joint friction pairs is fixed and cannot be dynamically adjusted according to real-time unbalanced moments; the support system passively bears pressure and lacks an active adjustment mechanism, making it difficult to respond quickly in emergency situations. To address these problems, there is an urgent need for a ball joint device that integrates dynamic monitoring and active adjustment functions to improve the stability and safety of rotation construction. Utility Model Content

[0004] In order to solve the above-mentioned technical problems in the existing technology, this utility model provides a dynamic balance control device for the rotation construction of T-shaped bridges based on unbalanced moment that is scientifically sound, easy to adjust, easy to construct, and safe and reliable.

[0005] To solve the above-mentioned technical problems, the present invention adopts the following technical solution: a dynamic balance control device for the rotation construction of a T-shaped bridge based on unbalanced moment, comprising an upper ball joint and a lower hinge support. The top surface of the lower hinge support is provided with a spherical groove, and the bottom surface of the upper ball joint is a spherical structure rotatably connected in the spherical groove. Several sector-shaped grooves are evenly opened along the vertical center line on the bottom surface of the upper ball joint. Each sector-shaped groove is provided with a sector-shaped friction pair adjustment block and an adjustment hydraulic cylinder. The upper end of the adjustment hydraulic cylinder is fixedly connected to the upper ball joint, and the lower end of the adjustment hydraulic cylinder is connected to the top surface of the sector-shaped friction pair adjustment block. The top surface of the upper ball joint is fixedly connected to the lower end of the pier through a horizontal support plate. The lower hinge support is pre-embedded in the lower bearing platform. The bottom surface of the upper ball joint is provided with a torque monitoring module integrating a pressure sensor, an inclination sensor, and a displacement sensor between two adjacent sector-shaped grooves.

[0006] The bridge is equipped with a horizontal dynamic adjustment system at its bottom. The horizontal dynamic adjustment system includes at least one guide rail along the length of the bridge bottom, several sets of counterweights that roll or slide on the guide rail, and a power drive mechanism at the bridge bottom for pushing the counterweights along the guide rail.

[0007] The top surface of the lower hinge support is equipped with several positioning support cylinders evenly arranged around the vertical center line, and all positioning support cylinders are located below the horizontal support plate.

[0008] Two elevation measurement marks are set at each end of the bridge along its length, and the two elevation measurement marks at the same end are arranged in the vertical and horizontal directions, respectively.

[0009] Compared with the prior art, the working principle and beneficial effects of this utility model using the above technical solution are as follows: 1) The torque monitoring module is evenly distributed in a circular array along the vertical center line of the upper ball joint. The pressure sensor array and the torque monitoring module (pressure sensor, tilt sensor and displacement sensor) are in contact with the spherical groove on the bottom surface of the lower hinge support to monitor and acquire the attitude data of the rotating structure in real time. The attitude data is transmitted to the control unit. Two elevation measurement marks are set at the same end along the vertical and horizontal directions respectively. The four elevation measurement marks are used together to collect the spatial positioning data of the area and work together to complete the determination of the point coordinate parameters. A Beidou / GPS dual-mode receiver is set at the elevation measurement mark. The satellite signal is transmitted to the control unit to calculate the three-dimensional coordinates of the key points of the bridge. Combined with the tilt data, a three-dimensional torque model is constructed. The control unit calculates the unbalanced torque according to the sensor data and elevation measurement data. It controls the coordinated adjustment of the hydraulic cylinder driving the sector friction pair adjustment block to extend and retract and the power drive mechanism driving the counterweight block to move along the guide rail to balance the unbalanced torque generated by the rotating structure.

[0010] 2) A spherical friction pair is formed between the upper ball joint and the lower hinge support; several sector-shaped grooves are opened on the bottom surface of the upper ball joint, and a sector-shaped friction pair adjustment block is slidably installed in each sector-shaped groove. The adjusting hydraulic cylinder receives the command of the control unit to drive the sector-shaped friction pair adjustment block to protrude out of the sector-shaped groove or retract into the sector-shaped groove. The pressing force of the sector-shaped friction pair adjustment block protruding out of the sector-shaped groove on the lower hinge support realizes the real-time compensation of the friction torque of the bridge rotation.

[0011] 3) The power drive mechanism in the horizontal dynamic adjustment system adopts a horizontal hydraulic cylinder, the guide rail is made of H-beams, and the upper end of the counterweight is suspended on the guide rail by rollers. According to the command of the control unit, the power drive mechanism pushes the counterweight to slide along the guide rail arranged in the longitudinal direction of the bridge to adjust the position of the counterweight and balance the longitudinal torque. 4) According to the instructions of the control unit, the positioning support cylinder adjusts the height and support force through the proportional valve, and forms an auxiliary support point after contacting the horizontal support plate, locking the rotation and preventing the rotation structure from overturning.

[0012] 5) The pressure sensor, tilt sensor and displacement sensor in the torque monitoring module are embedded with miniature sensing units along the surface of the upper ball joint to collect data on the stress distribution of the contact surface and the tilt angle of the bridge in real time.

[0013] In summary, this invention achieves real-time monitoring and adaptive compensation of unbalanced torque during T-structure rotation construction through the synergistic action of a torque monitoring module, a split-type sector-shaped friction pair adjustment block, a horizontal dynamic adjustment system, and a control unit. The device integrates a real-time detection system, movable counterweight, and locking function, significantly improving rotation stability and safety, and is suitable for the construction of long-span asymmetrical bridges. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the structure of this utility model; Figure 2 This is a schematic diagram of the split structure of the upper ball joint and the lower hinge support; Figure 3 This is a bottom view of the upper ball joint; Figure 4 This is a schematic diagram of the entire bridge structure; Figure 5 This is a schematic diagram showing the arrangement of the adjusting block and adjusting hydraulic cylinder of the internal sector-shaped friction pair of the upper ball joint. Detailed Implementation

[0015] The technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0016] like Figures 1-5 As shown, the dynamic balance control device for the rotation construction of a T-shaped bridge based on unbalanced moment includes an upper ball joint 1 and a lower hinge support 2. The top surface of the lower hinge support 2 is provided with a spherical groove 3. The bottom surface of the upper ball joint 1 is a spherical structure rotatably connected in the spherical groove 3. Several sector-shaped grooves are evenly opened along the vertical center line on the bottom surface of the upper ball joint 1. Each sector-shaped groove is provided with a sector-shaped friction pair adjustment block 4 and an adjustment hydraulic cylinder 5. The upper end of the adjustment hydraulic cylinder 5 is fixedly connected to the upper ball joint 1, and the lower end of the adjustment hydraulic cylinder 5 is connected to the top surface of the sector-shaped friction pair adjustment block 4. The top surface of the upper ball joint 1 is fixedly connected to the lower end of the pier 7 through a horizontal support plate 6. The lower hinge support 2 is pre-embedded in the lower bearing platform. The bottom surface of the upper ball joint 1 is provided with a torque monitoring module 9 integrating pressure sensor, tilt sensor and displacement sensor between two adjacent sector-shaped grooves.

[0017] The bottom of the bridge 10 is provided with a horizontal dynamic adjustment system. The horizontal dynamic adjustment system includes at least one guide rail 11 along the length direction at the bottom of the bridge 10, several sets of counterweights 12 rolling or sliding on the guide rail 11, and a power drive mechanism at the bottom of the bridge 10 for pushing the counterweights 12 to move along the guide rail 11.

[0018] The top surface of the lower hinge support 2 is provided with several positioning support cylinders 13 evenly arranged around the vertical center line. All positioning support cylinders 13 are located below the horizontal support plate 6.

[0019] Two elevation measurement marks 8 are provided at both ends along the length of the bridge 10, and the two elevation measurement marks 8 at the same end are arranged in the vertical and horizontal directions respectively.

[0020] The working principle and steps of this utility model embodiment are as follows: (1) The lower hinge support 2 is embedded in the lower bearing platform. The sector-shaped friction pair adjustment block 4 is connected to the adjustment hydraulic cylinder 5 by bolts. The adjustment hydraulic cylinder 5 is fixed inside the upper ball joint 1 by high-strength bolts. Several positioning support cylinders 13 located on the outer side of the top surface of the lower hinge support 2 are arranged on the outer side of the upper ball joint 1. (2) The torque monitoring module 9 is installed on the bottom surface of the upper ball joint 1 between two adjacent sector grooves, that is, in the gap between the two adjacent sector friction pair adjustment blocks 4. The counterweight block 12 is installed on the guide rail 11 arranged along the length of the bridge 10, and moves linearly on the guide rail 11 through the power drive mechanism. (3) During the rotation construction, the torque monitoring module 9 collects pressure, tilt angle and coordinate data in real time through four elevation measurement marks 8 to construct the rotation structure posture data; (4) When a longitudinal (length direction of bridge 10) torque deviation is detected, the power drive mechanism is controlled to drive the counterweight block 12 to move along the guide rail 11, and at the same time the hydraulic cylinder 5 of the corresponding sector friction pair adjustment block 4 is adjusted to increase the contact pressure between the sector friction pair adjustment block 4 and the spherical groove 3. (5) If the horizontal tilt angle exceeds the threshold, the control unit sends a start command to the corresponding positioning support cylinder 13. The positioning support cylinder 13 extends and presses against the horizontal support plate 6 to provide stable support force and ensure the stability of the rotation.

[0021] (6) Abnormal handling: When the system detects an unadjustable torque (such as strong wind disturbance), the system immediately starts the adjusting hydraulic cylinder 5 and the positioning support cylinder 13 to the maximum extent, locks the upper ball joint 1, and resumes rotation after the external interference is eliminated.

[0022] Finally, it should be noted that the torque monitoring module 9, adjusting hydraulic cylinder 5, positioning support cylinder 13, power drive mechanism, control unit, elevation measurement mark 8 and other components in this application are all existing conventional technologies and can be purchased on the market. The specific structure and principle will not be described in detail. The automatic control and algorithm involved in this utility model do not involve new computer programs.

[0023] The above embodiments are only used to illustrate the technical solution of this utility model and are not intended to limit it. Although the utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can still be made to the technical solution of this utility model, and such modifications or equivalent substitutions cannot cause the modified technical solution to deviate from the spirit and scope of the technical solution of this utility model.

Claims

1. A dynamic balance control device for the rotation construction of a T-shaped bridge based on unbalanced moment, comprising an upper spherical hinge and a lower hinge support, wherein the top surface of the lower hinge support is provided with a spherical groove, and the bottom surface of the upper spherical hinge is a spherical structure rotatably connected within the spherical groove, characterized in that: The bottom surface of the upper ball joint is evenly provided with several sector-shaped slots along the vertical center line. Each sector-shaped slot is provided with a sector-shaped friction pair adjustment block and an adjustment hydraulic cylinder. The upper end of the adjustment hydraulic cylinder is fixedly connected to the upper ball joint, and the lower end of the adjustment hydraulic cylinder is connected to the top surface of the sector-shaped friction pair adjustment block. The top surface of the upper ball joint is fixedly connected to the lower end of the pier through a horizontal support plate. The lower hinge support is embedded in the lower bearing platform. The bottom surface of the upper ball joint is provided with a torque monitoring module integrating pressure sensor, tilt sensor and displacement sensor between two adjacent sector-shaped slots.

2. The dynamic balance control device for the T-bridge construction by swivel method based on unbalanced moment according to claim 1, characterized in that: The bridge is equipped with a horizontal dynamic adjustment system at its bottom. The horizontal dynamic adjustment system includes at least one guide rail along the length of the bridge bottom, several sets of counterweights that roll or slide on the guide rail, and a power drive mechanism at the bridge bottom for pushing the counterweights along the guide rail.

3. The dynamic balance control device for the T-bridge construction by swivel method based on unbalanced moment according to claim 1, characterized in that: The top surface of the lower hinge support is equipped with several positioning support cylinders evenly arranged around the vertical center line, and all positioning support cylinders are located below the horizontal support plate.

4. The dynamic balance control device for the T-bridge construction by swivel method based on unbalanced moment according to claim 1, characterized in that: Two elevation measurement marks are set at each end of the bridge along its length, and the two elevation measurement marks at the same end are arranged in the vertical and horizontal directions, respectively.

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